在你的具體的例子總內存是的Android慧深庫分配的內存中的所有緩存的總和
Caches:
Current memory usage/total memory usage (bytes):
TextureCache 74625498/75497472
LayerCache 3538944/50331648 (numLayers = 3)
Layer size 1440x810; isTextureLayer()=1; texid=24 fbo=0; refs=1
Layer size 1440x810; isTextureLayer()=1; texid=42 fbo=0; refs=1
Layer size 1440x810; isTextureLayer()=1; texid=48 fbo=0; refs=1
Layer size 1344x192; isTextureLayer()=0; texid=40 fbo=0; refs=1
Layer size 1472x192; isTextureLayer()=0; texid=41 fbo=0; refs=1
Layer size 1344x256; isTextureLayer()=0; texid=23 fbo=0; refs=1
Layers total 17535744 (numLayers = 6)
RenderBufferCache 0/8388608
GradientCache 32768/1048576
PathCache 1260/33554432
TessellationCache 0/1048576
TextDropShadowCache 0/6291456
PatchCache 128/ 131072
FontRenderer 0 A8 1048576/1048576
FontRenderer 0 RGBA 0/ 0
FontRenderer 0 total 1048576/1048576
Other:
FboCache 0/ 0
Total memory usage:
93243974 bytes, 88.92 MB
The total memory 88.92 MB是分配的內存爲TextureCache總和 + 層共有 + ... + FboCache
此輸出變爲從Android HWUI庫 - 這是實現Android的用戶界面基於OpenGL硬件加速繪製庫
更多細節可以在源代碼中讀取,例如here